Full member database with filters

Checked the knowledge base etc but can't find an answer to this question...

There is the default "all members" option in the left menu. But that one is not customizable (view, filters etc). So should I create a new space, with a blank page, and then add a members block?

I tried that, yet still can't see how to add filters so members can select other members based on custom field entries.

Ideally we'll have one list/database with all members across the board, and then can add within spaces one list/database with members of that space only (eg for a program we run).

Any guidance appreciated.

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